<template>
  <div class="shopcar-container">
    <div class="goods-list">
      <!-- 商品列表项区域 -->
      <div class="mui-card" v-for="(item, i) in goodslist" :key="item.id">
        <div class="mui-card-content">
          <div class="mui-card-content-inner">
            <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChange(item.id,$store.getters.getGoodsSelected[item.id])"></mt-switch>
            <img :src="item.thumb_path" alt="">
            <div class="info">
              <h1>{{item.title}}</h1>
              <p>
                <span class="price">￥{{item.sell_price}}</span>
                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                <!-- 问题：如何从购物车中获取商品的数量 -->
                <!-- 1.可以先创建一个 空对象，然后循环购物车中所有的商品数据，把 当前循环这条商品的 id ,作为对象的属性名，count 值作为对象的属性值，这样当把所有的商品循环一遍，就会得到一个对象 {88:2,89:1,90:4} -->
                <a href="" @click.prevent="remove(item.id,i)">删除</a><!-- 加.prevent 阻止 a标签 的默认行为 -->
              </p>
            </div>
          </div>
        </div>
      </div>
      <!-- 结算区域 -->
      <div class="mui-card">
        <div class="mui-card-content">
          <div class="mui-card-content-inner jiesuan">
            <div class="left">
              <p>总计（不含运费）</p>
              <p>已勾选商品<span class="red">{{$.store.getters.getGoodsCountAndAmount.count}}</span>件，总价<span class="red">￥{{$.store.getters.getGoodsCountAndAmount.amout}}</span>元</p>
            </div>
            <mt-button type="danger">去结算</mt-button>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import numbox from './../subcomponents/shopcar_numbox.vue'
export default{
  data(){
    return{
      gooodslist:[],//购物车中所有商品的数据
    }
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    getGoodsList(){//获取购物车商品列表
    //1.获取到store 中所有商品的id 然后拼接出一个用逗号分隔的字符串
      var idArr=[];
      this.$store.state.car.forEach(item =>idArr.push(item.id));
      //若购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
      if(idArr.length<=0){
        return;
      }
      this.$http.get('api/goods/getshopcarlist/'+idArr.join(',')).then(result=>{
        if(result.body.status===0){
          this.gooodslist=result.body.message;
        }
      })
    },
    remove(id,index){//点击删除，把商品从 store 中根据传递的 ID 删除，同时把当前组件中的goodslist中，对应要删除的那个商品，使用 index 来删除
      this.$store.commit('removeFormCar');
      this.gooodslist.splice(index,1);//删除当前组件中的那个商品
    },
    selectedChange(id,val){//每当点击开关，把最新的 开关状态 同步到store 中
      this.$store.commit('updateGoodsSelected',{id,selected:val})
    }
  },
  components:{
    numbox,
  }
}
</script>
<style scoped>
.shopcar-container{
  background-color: #eee;
  overflow: hidden;
}
.goods-list img{
  width: 60px;
  height: 60px;
}
.goods-list h1{
  font-size: 13px;
}
.price{
  color: red;
  font-weight: bold;
}
.info{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-left: 5px;
}
.goods-list .mui-card-content-inner{
  display: flex;
  align-items: center;
}
.jiesuan{
  display: flex;
  justify-content: space-between;
  text-align: left;
}
.red{
  color: red;
  font-weight: bold;
}
</style>

